Line filter



FIG. 1 is a front elevational view of a line filter;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a cross-sectional view thereof along the line 7—7 of FIG. 1; and,

FIG. 8 is a cross-sectional view thereof along the line 8—8 of FIG. 5. 

The ornamental design for a line filter, as shown and described. 